Rockbox is a open-source project with the aim to provide a better and improved firmware for Archos MP3 players.

Exchanging the original Archos firmware with the Rockbox firmware is simply done by copying the firmware files to the jukebox and does not contain any risc (as far as I'm informed), except the fact that you will loose the Archos warranty.

In Archos models, the Rockbox SW can also be flashed (see: Rockbox in Flash, Blind Man's Guide to Flashing Rockbox, RomBox).

Using the Rockbox firmware in the car has some essential advantages:

• After switching on the jukebox, it continues to play at that position where it stopped when it was switched off last time (same behaviour as the CD changer).
• There is a "Car Adapter Mode" with the following features:
• If the external power switches off, the jukebox enters the pause mode for a adjustable time. That means the jukebox is switching off itself on ignition off after a certain time delay.
• If the jukebox did not yet switch off itself completely and the external power returns, it continues playing automatically.
• The time delay until the final shut down can be adjusted, that means some times can be "bridged" without a reboot of the jukebox (e.g. you leave the car for a short time to go into the bakery).
• There is a feature to announce directory names acoustically ("Talkbox"), what omits having a look on the display of the jukebox (also usefull while driving).
• Automatically waking-up the jukebox, when external power is applied again after a complete shut down.
  This feature is only available for Archos modells that have possibility to flash Rockbox.
• This way all the requirements are fullfilled, to let the AJB disappear completely from the car cockpit (e.g. under the seat, into the trunk etc.).
• As a result, that can lower the risc that the AJB might get stolen.